microcontroller based thread strength … · electronics component. this system uses the at89c51...

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056

Volume: 03 Issue: 03 | Mar-2016 www.irjet.net p-ISSN: 2395-0072

© 2016, IRJET ISO 9001:2008 Certified Journal 028

MICROCONTROLLER BASED THREAD STRENGTH MEASUREMENT SYSTEM

Mr. A. B. Gawade1, Ms. K. A. Gawade2, Ms. A. M. More3, Ms. A. S. Shinde4,

1B.E. Student, Dept. of E&TC Engineering, ADCET Ashta, Maharashtra, India 2B.E. Student, Dept. of E&TC Engineering, ADCET Ashta, Maharashtra, India

3B.E. Student, Dept. of E&TC Engineering, ADCET Ashta, Maharashtra, India

4Assistant Professor, Dept. of E&TC Engineering, ADCET Ashta, Maharashtra, India

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Abstract – This paper puts forward the solution to the tensile strength measurement of various materials. Now days compact system takes place major role. The system shown in this paper uses different types of mechanical as well as electronics component. This system uses the AT89c51 microcontroller for the controlling purpose. This data or indications can be shown on the LCD display.

Key Words: Load cell, Microcontroller, ADC, DC motor.

1. INTRODUCTION

As we are moving towards the world of microprocessor

and microcontroller and this technology has been used in

every field. We are developing a product for the textile

industry to measure the thread strength. Our system is

different than the current available one. This system

depends on the microcontroller and it will reduce the time to

check the strength of the thread. In the recent system for

checking the strength of the thread, they use the heating coil

conditions or they use the arc system for the checking

strength. Here we don’t require the heating coil like

conventional machine. We use real time system this system

is interface with the pc. These types of tests may be

performed under ambient or controlled (heating or cooling)

conditions. Strength testing is performed on materials like

metals, plastics, leather fabrics, adhesives, films, paper,

composites, rubbers etc. We have decided to make a system

that will help to measure the strength of the thread. So we

are performing the test of the thread strength measurement

by using the microcontroller system. Here we are displaying

the strength of the thread on LCD display by using the force

or pressure sensor. We expect our project to be able to

accurately measure the strength of the thread. After break

the thread sound the alarm and display the reading on LCD.

This system includes many components namely as

microcontroller, Load cell, adc, instrumentation amplifier, dc

motor and motor drivers, lcd display , keys etc. The different

component have different task assigned to it. Microcontroller

controls the whole system, EPROM store the run time

reading, switch and control circuitry is used to turn on/off

the system, motor driver is used to control the dc motor , and

lcd display is used to display the current reading of thread.

1.1 Load cell

When we design our project strength measurement system, our first work was to determine which mechanical component to use as a pressure or force transducer. As we know most of times load cell is used for the weight measurement. So we have used the load cell. (Fig. 1)

Figure 1: Load cell

The load cell is an easy tool for weight measuring or the

pressure or force measurement. It can be used as pressure or

force sensor it will give result if we apply external force on it.

The module features, The LCC-ESP4 load cell is designed for

electronic bench and platform scales, medical scale, and any

application where a low profile load cell design is a must.

Low in cost and suitable for a wide variety of OEM and force

measurement applications, the LCC-ESP4 load cell is readily

available in large or small quantities. The strain gauge area

and electronic parts are coated and sealed to provide an

IP65 protection class rating

1.2 ADC Module: (MCP 3202) MCP 3202 is a successive approximation 12 bit analog to

digital converter with on board sample and hold circuitry.

The MCP 3202 is programmable to provide a single pseudo

differential input pairs or single ended input. Differential

non linearity is specified at +- 1 LSB an integral non linearity



© 2016, IRJET ISO 9001:2008 Certified Journal Page 1029

is offered in one LSB. Communication with the device is done

using a simple serial interface with the SPI protocol. The

device is capable of conversion of up to 100ksps at 5volt and

50ksps at 2.7volt. This adc is use for the sensor interface,

data acquisition, process control and battery operated

system.

Figure 2: ADC MCP3202

1.3 Motor driver :( L293d)

L293Dis a dual H‐Bridge motor driver, so with one IC we can

interface two DC motors which can be controlled in both cloc

kwise and counter clockwise direction and if you have motor

with fix direction of motion. You can make use of all the four

I/Os to connect up to four DC motors. L293D has output curr

ent of 600mA and peak output current of 1.2A per channel.

Moreover for protection of circuit from back EMF output dio

des are included within the IC. The output supply has a wide

range from 4.5V to 36, which has made L293D a best motor

driver.

Figure 3: Motor driver

1.4 DC Motor We use dc motor here because it is easy to interface with the microcontroller and we can control its speed also. We do many things with the dc motor so we use the dc motor in our system.

1.5 System concept

We are designing thread strength measurement

system for measuring the strength of the thread. In this we

are using AT89c51 microcontroller. It is CMOS 8 bit on chip

8K byte of in system programmable flash memory, it has 256

byte of RAM, Two 16 bit timer counter. Microcontroller is of

two packages which are DIP and QFP. Here we are using 40-

pin DIP package which has the same pin configuration as of

8051 microcontroller, including the external multiplexed

address and data bus. Microcontroller has four ports which

are PORT 0, PORT 1, PORT 2, and PORT 3. PORT3 considered

as input of ADC. PORT 0 is output port which is connected to

LCD.

Figure 4: Block diagram

In our project we are using load cell as force or

pressure transducer. The load cell is connecting to the

microcontroller. The information collected from load cell as

output is in analog form hence it is converted into digital

form by ADC. The output values are display on LCD

continuously. Microcontroller compares all values of with

the minimum and maximum level. This compared output

show on the LCD. If output value goes above maximum limit

set value then it will show a maximum force on the LCD.

Using hyper terminal we also take our reading on the

computer.

2. Desired output

In our Thread strength measurement system project we are using LCD, Buzzer output side.

We have used 16*2 LCD i.e. 16 character in 1 line,

total 2 lines are there. LCD is used to display output. LCD has

16 pins in which D0 to D7 are used for data transmission.

There are two VCC and ground in which one is used for LCD



© 2016, IRJET ISO 9001:2008 Certified Journal Page 1030

and another for backlight. Register used are RS0 and RS1 in

which RS0 for displaying command and RS1 for data.

The LCD shows the current output when the system

is on. When the thread gets break that time it will show the

maximum output on the screen and that output will be the

strength of that thread. This strength is measured in grams.

When the thread break the motor will stop

automatically and the buzzer will ON and then we come to

now the maximum reading.

3. CONCLUSIONS

It is obvious that thread strength measurement

system is become very compact but it is very easy to use and

this same system with small modification we can use it for

various tensile strength measurement systems.

REFERENCES [1] Article by Validation of a Miniature Tensile Strength

Measurement System, Digital Library / STP / STP1418-EB/STP10824S Roebuck B, Lord JD, Orkney LP

[2] Article about Tensile strength in the English Wikipedia on 24-Jul-2004.html

[3] Casting and Disamatic Moulding High Quality & Globally Competitive, www.fidax.com.

[4] Load, tensile strength News from Torque Tools.html www.Engineeringtalk.com

[5] Atmel AT89c51 8 bit microcontroller data sheet.

BIOGRAPHIES

Mr. Abhijit B. Gawade He is studying in Annasaheb Dange College Of Engineering and Technology, Ashta, MH, India. He is student of electronics and telecommunication department.

Ms. Kavita B. Gawade She is studying in Annasaheb Dange College Of Engineering and Technology, Ashta, MH, India. She is student of electronics and telecommunication department.

Ms. Ashwini M. More She is studying in Annasaheb Dange College Of Engineering and Technology, Ashta, MH, India. She is student of electronics and telecommunication department. Mrs. Ashwini S. Shinde

She is working as Assistant Professor in Annasaheb Dange College Of Engineering and Technology, Ashta, MH, India. She is having 9 years of teaching experience. Area of specialization: Image processing

microcontroller based thread strength … · electronics component. this system uses the at89c51...

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